Pulley.



No. 792,915. I PATENTED JUNE 20, 1905. E. E. MGINTYRE.

PULLEY.

APPLICATION FILED SBPT.16. 1904.

2 SHEETS-SHEET 1.

31 25 EQ Q @flitnmom: dawn/0:.

MWKM M ff T0111 0;

No. 792,915. PATENTED JUNE 20, 1905.

- E. B. MOINTYRE- PULLEY.

APPLIOATION FILED SEPT. 16. 1904.'

2 SHEETS-SHEET 2,

5 1'! "cum: I 011mm: (an M MZVW .v 7 M,

NITED STATES Patented June 20, 1905.

ELMER E. MCINTYRE, OF PITTSBURG, PENNSYLVANIA.

PULLEY;

SPECIFICATION forming part of Letters Patent No. 792,915, dated June 20, 1905.

Application filed September 16, 1904. Serial No. 224,640.

1'0 all whom it 771/601] concern.-

Be it known that I, ELMER E. MOINTYRE, a citizen of the United States of America, residing at Pittsburg, in the county of Allegheny and State of Pennsylvania, have invented certain new and useful Improvements in Pulleys, of which the following is a specification, reference being had therein to the accompanying of manufacturing pulleys of this type is reduced to a minimum and a strong and durable construction maintained.

Briefly described, the pulley constructed by me comprises a plurality of parts-namely, the rim, spokes, and hub each of these parts comprising one or more pieces, the rim being formed of two pieces of metal, the spokes of two pieces of metal, and the hub formed of two forgings or castings, all of these parts being secured together by any suitable means whereby the rigidity of the pulley will be such as t0- provide a serviceable pulley.

All of the above construction will be hereinafter more fully described, and specifically pointed out in ,the claims.

In describing the invention in detail reference is had to the accompanying drawings, forming a part of this application, and wherein like numerals of reference indicate like parts throughout the several views, in which- Figure 1 is a side elevation of my improved pulley. Fig. 2 is a similar view with the hub thereof removed. Fig. 3 is a vertical sectional view taken on the line :0 m of Fig. 1. Fig. 4c is a vertical sectional view taken on the line y g of Fig. 2. Fig. 5 is a side elevation of one of the rim-pieces of my improved pulley. Fig. 6 is a top plan view of the same. Figs. 7 and 8 are detail views of one of the spokes. Fig.

9 is a front elevation of the two hub-pieces. Fig. 10 is a side elevation of the same. Fig. 11 is a plan view of the hub.

The pulley as contemplated by me comprises, as heretofore stated, a plurality of pieces, and the reference-numerals 1 and 2 indicate two semicylindrical pieces, which are formed of metal, these pieces being rolled to form the periphery or rim of the pulley. In rolling these pieces of metal I have provided the edges thereof with an integral bead 1, and after the pieces have been so formed the ends thereof or their horizontally-alined edges are bent inwardly, forming flanges 3 3, which are provided with a plurality of openings 4: 1, through which bolts 5 may pass and have nuts 6 6 secured thereon to firmly fasten and retain the two flanges in engagement with one another, whereby the semicylindrical halves are held together to form the rim of the pulley. In the rolling of the semicylindrical halves or pieces 1 and 2 I provide each piece with a central semicircular rib 7 to strengthen and form a rigid construction and provide means for securing the spokes within the pieces just described.

Reference will now be had to Figs. 1, 3, 9, and 10,wherein the hub is clearly illustrated. The hub comprises two pieces 8 and 9, said pieces being preferably formed of a forging or casting, and each piece is semicylindrical, and centrally of each piece I form semicircular peripheral ribs 10 10, whereby when the two pieces are placed together annular ribs are formed. The two horizontally-alined edges of the semicylindrical pieces are provided with flanges 11 11, these flanges extending outwardly, and each flange is provided with an aperture 12, whereby they may be secured together by bolts 14, that pass through said apertures and have nuts 15 secured thereon. In employing the bolts 14 and nuts 15 means is provided for securing the hub or pulley to a shaft, and in Fig. 10 of the drawings I have illustrated a shaft in dotted lines, upon which the hub is supposed to be secured. The peripheral ribs 10 10 are provided with a plurality of apertures 16, and the central ribs of the pieces 1 and 2, comprising the rim of the pulley, are provided with a plurality of apertures 17 17, these apertures being provided whereby a plurality of spokes 18 may be secured in the pieces 1 and 2 and support the hub. In the formation of the flanges 11 11 I have provided spaces 18 between said flanges and the peripheral ribs, the object of which will be hereinafter more fully described.

The spokes, as illustrated in Figs. 7 and 8 of the drawings, comprise two pieces of sheet metal, each piece being provided with an oval central rib 19, and in the formation of the metal spoke each piece is provided with outwardly-extcnding portions 20 20, these portions being pierced, providing apertures 21 21, and the opposite end of the spoke on each side of the central rib 19 is provided with apertures 22 22. These apertures are adapted to aline With apertures 17 of the central rib 7 when the spokes are to be placed thereon, and the apertures 21 of the spokes are adapted to aline with the apertures of the peripheral ribs 10, rivets being employed to secure these parts together. I form each piece of the spoke, as designated at 23, slightly out of a horizontal plane to facilitate the securing of the pierced portions 21 upon the peripheral ribs 10 10. Rivets 24 are then employed for securing these portions of the ribs, while rivets 25 are used for securing the opposite end of the spoke to the central ribs 7 of the pieces 1 and 2. When forming the portions 20 20 of each piece of the spoke, the sides thereof are sheared to coincide with the radii of a circle, While the end of each piece is formed on a curve corresponding to the are described from the vertex of the said radii.

It will be seen in Figs. 7 and 8 of the drawings that two of these pieces comprise a spoke, and by referring to Figs. 1 and 2 it will be observed that when these spokes are placed together and secured upon the peripheral ribs 1O l0 and the central rib 7 of each semicylindrical piece 1 and 2 that a Web or spider is formed around the hub which will correspond to the hub and its spokes formed of one casting, the same rigidity and strength being maintained.

1 Wish it to be understood that when forming the pieces 8 and 9 and when piercing the central ribs 7 and the peripheral ribs 10 1O provision may be made for a greater number of spokes.

The spaces 18 are provided between the flanges of each hub-piece and the peripheral .be so desired.

It will be noted that various changes may be made in the details of construction without departing from the general spirit of my invention.

Having fully described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. A wheel comprising a rim composed of half-sections each formed with an integral semicircular rib at its center, and with inwardly extending longitudinally disposed flanges, a hub composed of similar semicylindrical half-sections havinglongitudinally-disposed flanges, and a plurality of parallel peripheral ribs, and sheet-metal spokes each composed of two similar sections, the inner ends of the half-sections of the spokes being separately secured, respectively, to the ribs of the hub-sections, and the outer ends being attached to the rib of the rim.

2. A wheel comprising a rim formed of jointed semicircular half-sections, said rim having a bead at each edge, and a central rib, a hub composed of half-sections bolted together and provided with concentric ribs, and spokes composed of matched sections embracing the rib of the rim between their outer ends and bearing against the outer sides of the ribs of the hub at their inner ends, and secured t0 the rib of the rim and the ribs on the hub, substantially as described.

3. A Wheel comprising a rim composed of metal half-sections having longitudinally-disposed inwardly-extending flanges bolted together, and a central integral rib, in combination with a hub composed of cast-metal halfsections formed with longitudinally-disposed flanges and concentric ribs, and sheet-metal spokes riveted to the rib of the rim and to the ribs of the hub.

In testimony whereof I affix my signaturein the presence of two witnesses.

ELMER E. MGINTYRE.

WVitnesses:

K. H. BUTLEN, E. E. POTTER. 

